US calculators
Mortgage payment tools and 1099 / self-employment tax estimators for US freelancers and homebuyers.
Mortgage
15 Year Mortgage Calculator
Monthly payments on 15-year US fixed-rate loans.
Open calculator →Mortgage Calculator
Full payment breakdown with taxes and insurance.
Open calculator →Mortgage Payment Calculator
Principal and interest payment only.
Open calculator →House Payment Calculator
P&I, tax, and insurance in one monthly estimate.
Open calculator →Mortgage Insurance (PMI) Calculator
Estimate PMI when down payment is below 20%.
Open calculator →Extra Payment Calculator
See payoff time saved with extra payments.
Open calculator →Amortization Calculator
Year-by-year loan balance and interest.
Open calculator →Refinance Calculator
Compare current vs new loan and break-even.
Open calculator →Freelancer & 1099 tax
1099 Tax Estimator
Self-employment tax, federal income tax, and quarterly payments.
Open calculator →Quarterly Tax Estimator
IRS estimated tax payments for freelancers and contractors.
Open calculator →1099 Tax Estimator — California
Federal + California FTB estimate for CA freelancers.
Open calculator →15-year mortgage scenarios
Popular 30-year mortgage scenarios
1099 tax by state
US mortgage tools explained
Our US mortgage cluster covers the full homebuyer workflow: estimating PITI-style payments, generating amortization schedules, comparing refinance break-even, and modeling extra principal payments.
Preset scenario pages (e.g. 30-year $400k) give quick starting points — adjust rate, down payment, tax, and insurance to match your lender quote. PMI is not auto-calculated; budget separately if your down payment is under 20%.
1099 and self-employment tax
Freelancers and independent contractors report income on Schedule C and pay self-employment tax plus federal income tax. Our 1099 estimator models SE tax, federal brackets, and optional California state tax.
Quarterly estimated payments help avoid IRS underpayment penalties. Use the quarterly tax tool alongside the 1099 estimator when planning cash set-asides throughout the year.